Global oscillation analysis of solar neutrino data with helioseismically constrained fluxes

A seismic model for the Sun calculated using the accurate helioseismic data predicts a lower $^{8}{B}$ neutrino flux as compared to standard solar models (SSM). However, there persists a discrepancy between the predicted and measured fluxes and it seems necessary to invoke neutrino oscillations to explain the data. In this work, we perform a global and unified oscillation analysis of the latest solar neutrino data using the seismic model fluxes as theoretical predictions. We determine the best-fit values of the neutrino oscillation parameters and the $\chi^2_{min}$ for both $\nu_e-\nu_{active}$ and $\nu_e -\nu_{sterile}$ cases and present the 90% and 99% C.L. allowed parameter regions in the $\Delta m^2 - \tan^2 \theta$ plane for $\nu_e-\nu_{active}$. The results are compared with those obtained using the latest SSM by Bahcall and his collaborators.